* + ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save.patch added to -mm tree
@ 2020-03-29 1:00 akpm
0 siblings, 0 replies; only message in thread
From: akpm @ 2020-03-29 1:00 UTC (permalink / raw)
To: gechangwei, ghe, jlbec, joseph.qi, junxiao.bi, mark, mm-commits,
piaojun, willy
The patch titled
Subject: ocfs2: use memalloc_nofs_save instead of memalloc_noio_save
has been added to the -mm tree. Its filename is
ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Subject: ocfs2: use memalloc_nofs_save instead of memalloc_noio_save
OCFS2 doesn't mind if memory reclaim makes I/Os happen; it just cares that
it won't be reentered, so it can use memalloc_nofs_save() instead of
memalloc_noio_save().
Link: http://lkml.kernel.org/r/20200326200214.1102-1-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
fs/ocfs2/cluster/tcp.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
--- a/fs/ocfs2/cluster/tcp.c~ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save
+++ a/fs/ocfs2/cluster/tcp.c
@@ -1570,15 +1570,13 @@ static void o2net_start_connect(struct w
struct sockaddr_in myaddr = {0, }, remoteaddr = {0, };
int ret = 0, stop;
unsigned int timeout;
- unsigned int noio_flag;
+ unsigned int nofs_flag;
/*
- * sock_create allocates the sock with GFP_KERNEL. We must set
- * per-process flag PF_MEMALLOC_NOIO so that all allocations done
- * by this process are done as if GFP_NOIO was specified. So we
- * are not reentering filesystem while doing memory reclaim.
+ * sock_create allocates the sock with GFP_KERNEL. We must
+ * prevent the filesystem from being reentered by memory reclaim.
*/
- noio_flag = memalloc_noio_save();
+ nofs_flag = memalloc_nofs_save();
/* if we're greater we initiate tx, otherwise we accept */
if (o2nm_this_node() <= o2net_num_from_nn(nn))
goto out;
@@ -1683,7 +1681,7 @@ out:
if (mynode)
o2nm_node_put(mynode);
- memalloc_noio_restore(noio_flag);
+ memalloc_nofs_restore(nofs_flag);
return;
}
@@ -1810,15 +1808,13 @@ static int o2net_accept_one(struct socke
struct o2nm_node *local_node = NULL;
struct o2net_sock_container *sc = NULL;
struct o2net_node *nn;
- unsigned int noio_flag;
+ unsigned int nofs_flag;
/*
- * sock_create_lite allocates the sock with GFP_KERNEL. We must set
- * per-process flag PF_MEMALLOC_NOIO so that all allocations done
- * by this process are done as if GFP_NOIO was specified. So we
- * are not reentering filesystem while doing memory reclaim.
+ * sock_create_lite allocates the sock with GFP_KERNEL. We must
+ * prevent the filesystem from being reentered by memory reclaim.
*/
- noio_flag = memalloc_noio_save();
+ nofs_flag = memalloc_nofs_save();
BUG_ON(sock == NULL);
*more = 0;
@@ -1934,7 +1930,7 @@ out:
if (sc)
sc_put(sc);
- memalloc_noio_restore(noio_flag);
+ memalloc_nofs_restore(nofs_flag);
return ret;
}
_
Patches currently in -mm which might be from willy@infradead.org are
ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save.patch
mm-use-vm_fault-error-code-directly.patch
mm-rename-arguments-to-find_subpage.patch
mm-use-vm_bug_on_page-in-clear_page_dirty_for_io.patch
mm-unexport-find_get_entry.patch
mm-rewrite-pagecache_get_page-documentation.patch
mm-improve-dump_page-for-compound-pages.patch
mm-add-pagemaph-to-the-fine-documentation.patch
mm-check-pagetail-in-hpage_nr_pages-even-when-thp.patch
mm-optimise-find_subpage-for-thp.patch
mm-remove-config_transparent_huge_pagecache.patch
proc-inline-vma_stop-into-m_stop.patch
proc-remove-m_cache_vma.patch
proc-use-ppos-instead-of-m-version.patch
seq_file-remove-m-version.patch
proc-inline-m_next_vma-into-m_next.patch
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2020-03-29 1:00 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-03-29 1:00 + ocfs2-use-memalloc_nofs_save-instead-of-memalloc_noio_save.patch added to -mm tree akpm
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).